Download Oracle.1z0-813.ActualTests.2019-02-19.61q.tqb
| Vendor: | Oracle |
| Exam Code: | 1z0-813 |
| Exam Name: | Upgrade to Java SE 8 OCP |
| Date: | Feb 19, 2019 |
| File Size: | 4 MB |
Demo Questions
Question 1
Given the code fragment:
Which should be inserted into the line n1 to print Average = 2.5?
- Stream str = Stream.of(1, 2, 3, 4);
- IntStream str = IntStream.of(1, 2, 3, 4);
- DoubleStream str = Stream.of(1.0, 2.0, 3.0, 4.0);
- IntStream str = Stream.of(1, 2, 3, 4)
Correct answer: B
Explanation:
Use IntStream. Reference: https://docs.oracle.com/javase/8/docs/api/java/util/stream/IntStream.html Use IntStream.
Reference: https://docs.oracle.com/javase/8/docs/api/java/util/stream/IntStream.html
Question 2
Given the interface:
Which class implements IdGenerator in a thread-safe manner, so that no threats can get a duplicate id value during concurrent access?
Correct answer: B
Explanation:
An AtomicInteger is used in applications such as atomically incremented counters, and cannot be used as a replacement for an Integer. However, this class does extend Number to allow uniform access by tools and utilities that deal with numerically-based classes. The incrementAndGet() method atomically increments by one the current value. Reference: http://docs.oracle.com/javase/8/docs/api/java/util/concurrent/atomic/AtomicInteger.html#incrementAndGet-- An AtomicInteger is used in applications such as atomically incremented counters, and cannot be used as a replacement for an Integer. However, this class does extend Number to allow uniform access by tools and utilities that deal with numerically-based classes.
The incrementAndGet() method atomically increments by one the current value.
Reference: http://docs.oracle.com/javase/8/docs/api/java/util/concurrent/atomic/AtomicInteger.html#incrementAndGet--
Question 3
Which two statements are true about localizing an application? (Choose two.)
- Language codes use lowercase and region codes use uppercase letters.
- Resource bundle files include date and currency information.
- Language and region-specific programs are created using localized data.
- Support for new regional languages does not require recompilation of the code.
- Textual elements (messages and GUI labels) are hard-coded on the code.
Correct answer: AC
Explanation:
A: The following examples create Locale objects for the French language in Canada, the English language in the U.S. and Great Britain.aLocale = new Locale("fr", "CA"); bLocale = new Locale("en", "US"); cLocale = new Locale("en", "GB"); C: Localization is the process of adapting an internationalized application to support a specific region or locale.Incorrect Answers:B: Resource bundle files does not include date a currency information. Date and currency information are stored in locales, not in resource bundle files.D: Recompilation is not necessary.E: Textual elements are not hard-coded on the code.References:https://docs.oracle.com/javase/tutorial/i18n/locale/create.htmlhttp://docs.oracle.com/javaee/6/tutorial/doc/bnaxw.html A: The following examples create Locale objects for the French language in Canada, the English language in the U.S. and Great Britain.
aLocale = new Locale("fr", "CA");
bLocale = new Locale("en", "US");
cLocale = new Locale("en", "GB");
C: Localization is the process of adapting an internationalized application to support a specific region or locale.
Incorrect Answers:
B: Resource bundle files does not include date a currency information. Date and currency information are stored in locales, not in resource bundle files.
D: Recompilation is not necessary.
E: Textual elements are not hard-coded on the code.
References:
https://docs.oracle.com/javase/tutorial/i18n/locale/create.html
http://docs.oracle.com/javaee/6/tutorial/doc/bnaxw.html
